Had to pay 100 euros extra to upgrade as the car class I ordered was not available.

Will never use Europcar again! And will never hire from the French side of Geneva airport again - both are too much stress and hassle! No winter tyres available on a car that will spend 90% of its time driving up the alps? Then told because I didn’t have winter tyres I need to up the insurance to cover - double the rental. Then told car I ordered not available and to get a car we could fit our luggage in I needed to pay an upgrade, not happy! Then access to French side of Geneva airport is unmarked and very difficult to find - even with Satnav. Whole rental was a very stressful experience for 80 miles driven to resort and back, next time we will use a transfer service!